Home / 1,955.48-2,698.22-1,115.80

Finding the Fourth Proportional to 1,955.48, 2,698.22 and 1,115.80

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Solution

The fourth proportional to 1,955.48, 2,698.22 and 1,115.80 is: 1,539.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.48 : 2,698.22 = 1,115.80 : x
  2. Step 2: Convert to fraction form
    1,955.48/2,698.22 = 1,115.80/x
  3. Step 3: Cross multiply
    1,955.48x = 2,698.22 × 1,115.80
  4. Step 4: Simplify right side
    1,955.48x = 3,010,673.88
  5. Step 5: Solve for x
    x = 3,010,673.88/1,955.48
  6. Step 6: Final answer
    x = 1,539.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.